init.lua

---- BASE SETTINGS ----
do --- vim.opt ---
  local opt = vim.opt
  for k, v in pairs({
    -- IMPORT SETTINGS --
    modeline = false,
    modelines = 0,

    -- FILE --
    confirm = true,

    -- DIAPLAY --
    termguicolors = true,
    title = false,
    number = true,
    relativenumber = false,
    signcolumn = "yes",
    wrap = true,
    linebreak = true,
    showbreak = "↪ ",
    -- showbreak = "» ",
    breakindent = true,
    -- breakindentopt = "sbr",
    showmatch = true,  -- -> matchparen on nvim
    list = true,
    listchars = {
      tab = "» ",
      trail = "·",
      extends = "›",
      precedes = "‹",
    },
    display = { "lastline", "uhex", "msgsep" },
    diffopt = { "internal", "filler", "closeoff", "iwhite" },
    inccommand = "split",
    -- STATUS LINE --
    laststatus = 2,
    showmode = true,
    showcmd = true,
    cmdheight = 1,
    -- FOLDING --
    foldenable = false,
    foldmethod = "expr",
    foldlevel = 100,
    foldcolumn = "1",
    foldnestmax = 3,
    foldminlines = 1,

    -- SEARCHING --
    wrapscan = false,
    ignorecase = true,
    smartcase = true,
    incsearch = true,
    hlsearch = true,

    -- MOVING --
    scrolloff = 3,
    sidescrolloff = 3,
    virtualedit = "block",
    whichwrap = "b,s,h,l,<,>,[,]",
    mouse = "a",

    -- BUFFER --
    splitright = true,
    splitbelow = true,

    -- EDITTING --
    backspace = { "indent", "eol", "start" },
    autoread = true,
    hidden = true,
    formatoptions = "roqlm",
    clipboard = "unnamedplus",
    fileformats = { "unix", "dos" },
    -- INDENT --
    smartindent = true,
    autoindent = true,
    expandtab = true,
    shiftwidth = 2,
    tabstop = 2,
    softtabstop = 0,

    -- IME --
    iminsert = 0,
    imsearch = 0,

    -- BACKUP / RESTORE --
    swapfile = false,
    backup = false,
    writebackup = true,
    undofile = true,
    undodir = vim.fn.stdpath("state") .. "/undo",
    shada = "'100,<1000,s100,/100",
    shadafile = vim.fn.stdpath("state") .. "/shada/main.shada",

    -- NOTIFICATIONS --
    belloff = "all",

    -- GREP (ripgrep) --
    grepprg = "rg --vimgrep --smart-case",
    grepformat = "%f:%l:%c:%m",

    -- COMPLEMENTS --
    wildmenu = true,
    history = 1000,
    complete = ".,w,b,u,t,i",
    completeopt = { "menu", "menuone", "noselect" },
    pumheight = 10,
    omnifunc = "v:lua.vim.lsp.omnifunc",
    suffixes = {
      ".bak", "~", ".swp",
      ".o", ".obj", ".out", ".elf", ".self",
    },

  }) do
    opt[k] = v
  end
end

-- Auto create target directory if it is not exists
local group = vim.api.nvim_create_augroup("AutoMkdir", { clear = true })
vim.api.nvim_create_autocmd("BufWritePre", {
  group = group,
  callback = function(args)
    local file = vim.api.nvim_buf_get_name(args.buf)
    local dir = vim.fs.dirname(file)

    if dir and vim.fn.isdirectory(dir) == 0 then
      vim.fn.mkdir(dir, "p")
    end
  end,
})

-- Highlight cursorline on only current buffer 
vim.opt.cursorline = false
-- vim.api.nvim_set_hl(0, "CursorLine", { underline = true })
vim.api.nvim_create_autocmd({ "WinEnter", "BufEnter" }, {
  callback = function()
    vim.wo.cursorline = true
  end,
})
vim.api.nvim_create_autocmd({ "WinLeave", "BufLeave" }, {
  callback = function()
    vim.wo.cursorline = false
  end,
})

---- KEY BINDIGS ----
do
  vim.g.mapleader = "\\"
  local keymap = vim.keymap.set
  -- Moving --
  keymap("n", "j", "gj") 
  keymap("n", "k", "gk") 
  keymap("n", "gj", "j") 
  keymap("n", "gk", "k") 
  keymap({"n", "v"}, "<C-a>", "^") 
  keymap({"n", "v"}, "<C-e>", "$") 
  keymap({"i", "c"}, "<C-a>", "<Home>") 
  keymap({"i", "c"}, "<C-e>", "<End>") 
  -- Turn off highlight of searching results --
  keymap("n", "<Esc><Esc>", "<cmd>nohlsearch<CR>", { silent = true })
  -- Get path of current directory --
  keymap("c", "<C-x>",
    function()
      return vim.fn.expand("%:p:h") .. "/"
    end, { expr = true })
end

vim.api.nvim_create_autocmd("InsertLeave", {
  callback = function()
    vim.opt.iminsert = 0
  end
})